Blazing fast node.js: 10 performance tips from LinkedIn Mobile

Things I wish I knew about MongoDB a year ago I’ve used MongoDB for over a year at scale at both Heyzap and Bugsnag and I’ve found it to be a very capable database. As with all databases, there are some gotchas, and here is a summary of the things I wish someone had told me earlier. Selective counts are slow even if indexed For example, when paginating a users feed of activity, you might see something like, Understanding callback functions in Javascript Callback functions are extremely important in Javascript. They’re pretty much everywhere. Originally coming from a more traditional C/Java background I had trouble with this (and the whole idea of asynchronous programming), but I’m starting to get the hang of it. Strangely, I haven’t found any good introductions to callback functions online — I mainly found bits of documentation on the call() and apply() functions, or brief code snippits demonstrating their use — so, after learning the hard way I decided to try to write a simple introduction to callbacks myself. Functions are objects

Optimising NginX, Node.JS and networking for heavy workloads Used in conjunction, NginX and Node.JS are the perfect partnership for high-throughput web applications. They’re both built using event-driven design principles and are able to scale to levels far beyond the classic C10K limitations afflicting standard web servers such as Apache. Out-of-the-box configuration will get you pretty far, but when you need to start serving upwards of thousands of requests per second on commodity hardware, there’s some extra tweaking you must perform to squeeze every ounce of performance out of your servers. This article assumes you’re using NginX’s HttpProxyModule to proxy your traffic to one or more upstream node.js servers. We’ll cover tuning sysctl settings in Ubuntu 10.04 and above, as well as node.js application and NginX tuning. You may be able to achieve similar results if you’re using a Debian Linux distribution, but YMMV if you’re using something else.

6 Must Have Node.js Modulesblog So you're thinking about using node.js: awesome. If you're new to the community you're probably thinking "what's the best node.js module / library for X?" I think it's really true when experienced language gurus say "80% of your favorite language is your favorite library." This is the first in a series of articles will give you a high-level overview of some of our favorite node.js libraries at Nodejitsu. Hovercard - a jQuery plugin with built in Twitter and Facebook cards Hover over the red text to see the hovercard in action: jQuery is a cross-browser JS library designed to simplify the client-side scripting of HTML. It was released in January of 2006 by

Alexander Luksidadi's Blog » ExpressJS without Jade? Use Underscore template! Many of you must have felt like a burden knowing that Express recommended you to learn another template language (Jade). Don’t worry, you can code all your templates on HTML using underscoreJS! Oh yay? How We Built eBay’s First Node.js Application For the most part, eBay runs on a Java-based tech stack. Our entire workflow centers around Java and the JVM. Considering the scale of traffic and the stability required by a site like ebay.com, using a proven technology was an obvious choice. Increase ghost and expressjs performance with some Nginx tuning Ghost blog platform is shiny, new and the markdown editor is GREAT! As a web-performance addict, I wondered how well my DigitalOcean small instance ghost blog was performing. load test I did a load test using blitz.io which is a very simple load testing tool. I selected Ireland location, it makes more sense since my server is in Europe.

Working with Paper.js Paper.js offers different approaches for its integration in the browser. The simplest way is to use PaperScript, our extension of JavaScript that facilitates a few things along the way. For more advances users or bigger projects it might be preferable to work directly with JavaScript, as described in the tutorial about Using JavaScript Directly.